[INFO] cloning repository https://github.com/brennie/picasso [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/brennie/picasso" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbrennie%2Fpicasso", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbrennie%2Fpicasso'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] adb5c673dc9f5f8da6d6dd88a24a62db2fb72d22 [INFO] checking brennie/picasso against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbrennie%2Fpicasso" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/brennie/picasso on toolchain ceab6128fa48a616bfd3e3adf4bc80133b8ee223 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/brennie/picasso [INFO] finished tweaking git repo https://github.com/brennie/picasso [INFO] tweaked toml for git repo https://github.com/brennie/picasso written to /workspace/builds/worker-5-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/brennie/picasso already has a lockfile, it will not be regenerated [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded structopt-derive v0.2.10 [INFO] [stderr] Downloaded rand v0.5.1 [INFO] [stderr] Downloaded structopt v0.2.10 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] d70e96f179fe056138f1e3fc87b80b4bedcd3ebc99e33043437a2fcb0faf5559 [INFO] running `Command { std: "docker" "start" "-a" "d70e96f179fe056138f1e3fc87b80b4bedcd3ebc99e33043437a2fcb0faf5559", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "d70e96f179fe056138f1e3fc87b80b4bedcd3ebc99e33043437a2fcb0faf5559", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "d70e96f179fe056138f1e3fc87b80b4bedcd3ebc99e33043437a2fcb0faf5559", kill_on_drop: false }` [INFO] [stdout] d70e96f179fe056138f1e3fc87b80b4bedcd3ebc99e33043437a2fcb0faf5559 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 9758e47e56049af6585fdbe755a2881fd4122cddb229590d17574da87fd4c95f [INFO] running `Command { std: "docker" "start" "-a" "9758e47e56049af6585fdbe755a2881fd4122cddb229590d17574da87fd4c95f", kill_on_drop: false }` [INFO] [stderr] Compiling unicode-xid v0.1.0 [INFO] [stderr] Checking libc v0.2.42 [INFO] [stderr] Checking unicode-width v0.1.5 [INFO] [stderr] Checking strsim v0.7.0 [INFO] [stderr] Checking bitflags v1.0.3 [INFO] [stderr] Checking vec_map v0.8.1 [INFO] [stderr] Checking rand_core v0.2.1 [INFO] [stderr] Compiling proc-macro2 v0.4.6 [INFO] [stderr] Checking textwrap v0.9.0 [INFO] [stderr] Compiling quote v0.6.3 [INFO] [stderr] Checking atty v0.2.10 [INFO] [stderr] Checking rand v0.5.1 [INFO] [stderr] Checking clap v2.31.2 [INFO] [stderr] Compiling syn v0.14.2 [INFO] [stderr] Compiling structopt-derive v0.2.10 [INFO] [stderr] Checking structopt v0.2.10 [INFO] [stderr] Checking picasso v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused `#[macro_use]` import [INFO] [stdout] --> src/main.rs:3:1 [INFO] [stdout] | [INFO] [stdout] 3 | #[macro_use] [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `#[macro_use]` import [INFO] [stdout] --> src/main.rs:3:1 [INFO] [stdout] | [INFO] [stdout] 3 | #[macro_use] [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.66s [INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: syn v0.14.2 [INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1` [INFO] running `Command { std: "docker" "inspect" "9758e47e56049af6585fdbe755a2881fd4122cddb229590d17574da87fd4c95f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "9758e47e56049af6585fdbe755a2881fd4122cddb229590d17574da87fd4c95f", kill_on_drop: false }` [INFO] [stdout] 9758e47e56049af6585fdbe755a2881fd4122cddb229590d17574da87fd4c95f [INFO] checking brennie/picasso against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbrennie%2Fpicasso" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/brennie/picasso on toolchain 3a4bc97f6385a3aa300a4fd689b44350e54fd676 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/brennie/picasso [INFO] finished tweaking git repo https://github.com/brennie/picasso [INFO] tweaked toml for git repo https://github.com/brennie/picasso written to /workspace/builds/worker-5-tc2/source/Cargo.toml [INFO] crate git repo https://github.com/brennie/picasso already has a lockfile, it will not be regenerated [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 60b415881b450e5a7e697504c15a2567cdcdcf2f7da03a5110023193a6ca0e1f [INFO] running `Command { std: "docker" "start" "-a" "60b415881b450e5a7e697504c15a2567cdcdcf2f7da03a5110023193a6ca0e1f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "60b415881b450e5a7e697504c15a2567cdcdcf2f7da03a5110023193a6ca0e1f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "60b415881b450e5a7e697504c15a2567cdcdcf2f7da03a5110023193a6ca0e1f", kill_on_drop: false }` [INFO] [stdout] 60b415881b450e5a7e697504c15a2567cdcdcf2f7da03a5110023193a6ca0e1f [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 806163f0f3f7be46816b3f2d7a60565b6215792f7dde7794769d8a28c68be8df [INFO] running `Command { std: "docker" "start" "-a" "806163f0f3f7be46816b3f2d7a60565b6215792f7dde7794769d8a28c68be8df", kill_on_drop: false }` [INFO] [stderr] Compiling unicode-xid v0.1.0 [INFO] [stderr] Checking libc v0.2.42 [INFO] [stderr] Checking unicode-width v0.1.5 [INFO] [stderr] Checking ansi_term v0.11.0 [INFO] [stderr] Checking strsim v0.7.0 [INFO] [stderr] Checking bitflags v1.0.3 [INFO] [stderr] Checking vec_map v0.8.1 [INFO] [stderr] Checking rand_core v0.2.1 [INFO] [stderr] Compiling proc-macro2 v0.4.6 [INFO] [stderr] Checking textwrap v0.9.0 [INFO] [stderr] Compiling quote v0.6.3 [INFO] [stderr] Checking atty v0.2.10 [INFO] [stderr] Checking rand v0.5.1 [INFO] [stderr] Checking clap v2.31.2 [INFO] [stderr] Compiling syn v0.14.2 [INFO] [stderr] Compiling structopt-derive v0.2.10 [INFO] [stderr] Checking structopt v0.2.10 [INFO] [stderr] Checking picasso v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused `#[macro_use]` import [INFO] [stdout] --> src/main.rs:3:1 [INFO] [stdout] | [INFO] [stdout] 3 | #[macro_use] [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `#[macro_use]` import [INFO] [stdout] --> src/main.rs:3:1 [INFO] [stdout] | [INFO] [stdout] 3 | #[macro_use] [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0283]: type annotations needed [INFO] [stdout] --> src/puzzle.rs:111:22 [INFO] [stdout] | [INFO] [stdout] 111 | .collect::>()?; [INFO] [stdout] | ^^^^^^^ ------------ type must be known at this point [INFO] [stdout] | | [INFO] [stdout] | cannot infer type of the type parameter `B` declared on the method `collect` [INFO] [stdout] | [INFO] [stdout] = note: cannot satisfy `_: FromIterator<()>` [INFO] [stdout] = note: required for `Result<_, std::fmt::Error>` to implement `FromIterator>` [INFO] [stdout] note: required by a bound in `collect` [INFO] [stdout] --> /rustc/3a4bc97f6385a3aa300a4fd689b44350e54fd676/library/core/src/iter/traits/iterator.rs:1999:5 [INFO] [stdout] help: consider specifying the generic argument [INFO] [stdout] | [INFO] [stdout] 111 | .collect::>()?; [INFO] [stdout] | ~~~~~~~~~~ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0283]: type annotations needed [INFO] [stdout] --> src/puzzle.rs:111:22 [INFO] [stdout] | [INFO] [stdout] 111 | .collect::>()?; [INFO] [stdout] | ^^^^^^^ ------------ type must be known at this point [INFO] [stdout] | | [INFO] [stdout] | cannot infer type of the type parameter `B` declared on the method `collect` [INFO] [stdout] | [INFO] [stdout] = note: cannot satisfy `_: FromIterator<()>` [INFO] [stdout] = note: required for `Result<_, std::fmt::Error>` to implement `FromIterator>` [INFO] [stdout] note: required by a bound in `collect` [INFO] [stdout] --> /rustc/3a4bc97f6385a3aa300a4fd689b44350e54fd676/library/core/src/iter/traits/iterator.rs:1999:5 [INFO] [stdout] help: consider specifying the generic argument [INFO] [stdout] | [INFO] [stdout] 111 | .collect::>()?; [INFO] [stdout] | ~~~~~~~~~~ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to 1 previous error; 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0283`. [INFO] [stdout] [INFO] [stdout] error: aborting due to 1 previous error; 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0283`. [INFO] [stdout] [INFO] [stderr] error: could not compile `picasso` (bin "picasso") due to 2 previous errors; 1 warning emitted [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stderr] error: could not compile `picasso` (bin "picasso" test) due to 2 previous errors; 1 warning emitted [INFO] running `Command { std: "docker" "inspect" "806163f0f3f7be46816b3f2d7a60565b6215792f7dde7794769d8a28c68be8df", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "806163f0f3f7be46816b3f2d7a60565b6215792f7dde7794769d8a28c68be8df", kill_on_drop: false }` [INFO] [stdout] 806163f0f3f7be46816b3f2d7a60565b6215792f7dde7794769d8a28c68be8df